Pool cage screws - Why should they not be replaced?
- Eric Diaz
- Sep 20, 2023
- 5 min read
Updated: Jun 26
Understanding the intricacies of structural screws in certain metal frameworks is essential, especially when it comes to maintaining the integrity of the structure. Here's why you shouldn't rush to replace a structural screw.
Exact Positioning Is Crucial for a Pool Cage Structural Screw
Structural screws are designed to fit into an exact position inside the metal. This precision ensures the overall stability and longevity of the construction.
Internal Threaded Cylinder
If you were to inspect a pool cage metal from the inside, you'd notice a unique circular internal threaded cylinder. This internal threaded cylinder is where the pool cage structural screw fits snugly. It's not just a simple drilling process; the screw has to align with this internal threaded cylinder for it to work effectively.
Risks of Removing an Old Screw
The problem arises when, during an attempt to pull out an old screw, it breaks. In such cases, the internal threaded cylinder gets clogged with remnants of the old screw. Once clogged, it becomes nearly impossible to install a new screw, jeopardizing the stability of the structure.
Most Damage is Superficial
In many instances, it might seem like the screw is entirely corroded, but it's mainly the head that's affected due to it being made of unprotected iron. The internal part of the screw, thanks to its positioning within the internal threaded cylinder, remains shielded and often in better condition.
Maintenance Over Replacement
If you encounter a rusted screw head, there's no need for alarm. Using an iron brush, we can gently brush away the corrosion.
After cleaning, we apply red oxide, a potent antioxidant protection available at Sherwin Williams. Not only does it halt further corrosion, but it also preps the screw head to bond better with Bond-Plex paint, adding an additional layer of protection.
In conclusion, while it might seem like a good idea to replace rusted or damaged structural screws, it's not always the best course of action. Proper maintenance can extend the life of the screw and keep the structure intact, without the risks associated with extraction. Always consult with professionals when in doubt.
Which are the pool cage frame parts?
We have talked about the importance of screws and the stability of the whole pool cage frame structure but, Which are these pool cage frame parts? Here we show them at a glance:
Structural Components
Frame Posts: They provide the main support to the pool cage. These are big and sturdy poles that go into the ground and connect with every other part of the cage.
Rails: They are on the side of the pool cage and connect to the frame posts to provide stability to the cage.
Top Framework: It provides structure and shape to the pool cage’s roof.
Gutter: Positioned at the connection between the pool cage and the house, these protect your roof and your pool cage from rainwater, leaves and other debris.
Connecting Hardware
Clips: They help secure the connection between two segments of the cage, especially when there is a 90 degrees angle involved.
Straps: They help connect cables to some parts of the pool cage in order to provide more stability against high winds or heavy rain.
Screws: They connect the different metal parts of the pool cage together.
Additional Components
Kickplates: Are used as barriers installed in the lower part of the pool cage to prevent water, dirt and other debris to protect the screen from damage.
Doors: Essential to go in and out of the pool cage, whether it is a door to the house or to the rest of the backyard.
Door Jambs and Hinges: Jambs are the vertical parts of the door frame, where the door is secured once it is closed. On the other hand, hinges are the metallic pieces that connect the door to the frame and allow it to open and close.
Screen Materials: Generally fiberglass or polyester, where the first one is affordable and allows for good airflow and visibility, and the second one is more resistant, especially against corrosion.
Spline: This is what keeps the screen in place, and it can be round or flat.
Rollerknife: It is used to install screen splines. It combines a roller for pushing the spline into the frame groove with a blade for trimming excess screen material.
How does corrosion occur in a pool cage aluminum structure?
It is clear that corrosion is a very serious problem but, Why and how does it occur in your pool cage? Here we give you some answers:
How does rusting work?
Rust is a chemical reaction that happens when iron or steel interacts with oxygen and moisture. This forms iron oxide, which is commonly known as rust.
Water has a key role in this process because it acts as a catalyst; that is, it helps speed up the process of oxidation.
Rust refers specifically to the chemical reaction between iron -or steel- and oxygen, but the same reaction can happen with other metals, like aluminum, copper and even some forms of stainless steel. In these cases, the process is just called oxidation.
Where does corrosion happen in a pool cage?
Corrosion is a natural process that can happen on any metallic part of the pool cage. More specifically:
The main frame: Susceptible to corrosion, especially when exposed to water and chlorine from the pool.
Fasteners: They secure different parts of the frame, so corrosion on them can weaken the overall structure.
Parts exposed to water, salt, organic growth or chemicals: Any of these elements can act as catalysts for corrosion, so regular cleaning and maintenance are needed.
Which factors affect the corrosion of a pool enclosure aluminum structure?
Humidity and Condensation: Humidity and condensation can accelerate the electrochemical reactions in metal parts. In other words, water helps the oxidation process take place.
Chemicals in Pool Water: Chlorine is a common and effective pool sanitizer, but it is also a powerful oxidizer and can react with metals; that is, it accelerates the oxidation process.
Galvanic Corrosion: It occurs when two different metals are in contact with an electrolyte (like pool water, in the case of pool cages). The electrolyte facilitates the current flow between the two metals, causing accelerated corrosion of the less noble metal.
Biological Activity: Organic growths can trap moisture and be home to microbes. On one hand, moisture by itself makes metal more prone to corrosion. On the other hand, microbes can alter the pH, oxygen levels and other factors in the surrounding environment, which can also make it easier for rust to happen.
How to prevent corrosion in an aluminum pool cage?
Proper Installation and Maintenance: First, proper installation can go a long way preventing oxidation in a pool cage. That is, selecting appropriate materials, using protective coatings and ensuring proper design.
On the other hand, proper maintenance and regular cleaning will keep the pool cage protected and help deal with any rust early in its formation.
Anodizing and Coating: Anodization is an electrochemical process that increases the thickness of the natural oxide layer on the surface of metal parts; it helps against rust formation.
Additionally, coating implies using paint or powder coatings in order to isolate the metal from the environment, making it more resistant against rust.
Choosing the Right Materials: Higher quality materials offer better resistance against rusting.
Regular Inspections and Repairs: Pool cage maintenance should be done regularly, so that anything that should be taken care of can be dealt with while it is most manageable.
Final Comments
In summary, rust in pool cages can happen because of a variety of factors, especially from humidity, chemicals in the pool water and organic growths.
However, all that can be dealt with understanding the structure of your pool cage, proper installation, maintenance and the right professionals! Call us today and let us give you a hand taking care of your pool cage for you!
